30721891 (number)

30721891 is an odd 8-digits composite number following 30721890 and preceding 30721892. In scientific notation, it is written as 3.0721891 × 10^7. The sum of its digits is 31. It has a total of 2 prime factors and 4 positive divisors. There are 30709800 positive integers (up to 30721891) that are relatively prime to 30721891.

Interesting facts

Basic properties

Name

Name thirty million seven hundred twenty-one thousand eight hundred ninety-one

Notation

Scientific notation 3.0721891 × 10^7
Engineering notation 3.0721891 × 10^6

Prime Factorization of 30721891

Prime Factorization 3631 × 8461

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 30721891
Product of the distinct prime numbers

The prime factorization of 30721891 is 3631 × 8461. Since it has a total of 2 prime factors.

Most popular turbo-numbers

9, 3, 27, 84, 667, 545, 7637, 4891, 37551, 38090, 588569, 819751, 7999570, 4921120, 60658790, 50929707, 228057125, 924777594, 1353487433, 366510869

Basic calculations (n = 30721891)

Multiplication

n×y
n×2 61443782
n×3 92165673
n×4 122887564
n×5 153609455

Division

n÷y
n÷2 15360945.5
n÷3 10240630.333333
n÷3 7680472.75
n÷5 6144378.2

Exponentiation

ny
n2 943834586615881
n3 2.8996383292043E+22
n4 8.9082372689237E+29
n5 2.7367789437801E+37

Nth Root

y√n
2√n 5542.7331705576
3√n 313.1958373897
4√n 74.449534387783
5√n 31.440510479917

Divisors of 30721891

1, 3631, 8461, 30721891

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -30721890
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 1
Returns the nth root of the product of n divisors
H Harmonic Mean 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 30721891 can be divided by 4 positive divisors. The sum of these divisors (counting 30721891) is 1, the average is 0.25.

Base conversion 30721891

Base System Value
2 Binary 1110101001100011101100011
3 Ternary 2010210211111211
4 Quaternary 1311030131203
5 Quinary 30331100031
6 Senary 3014250551
8 Octal 165143543
10 Decimal 30721891
12 Duodecimal a356a57
16 Hexadecimal 1d4c763
20 Vigesimal 9c04eb
36 Base36 iah5v

Cryptographic Hash Functions

md5 d900bc3e5297aba1f1fbb4f084b427d5
sha1 4c3f512839cd7922c5700a854aaedaba066d421a
sha256 0afa8e0c0473980ac68dc7cd96fa3d7603dee39c93682b283247a8ae95c5cf8f
sha512 9b370b291683dbe533bf5e662cfe15b973584339607b3ef4c4b095f532a5d09ed9d2e202882cfe7c915923c5607dd1702f134ad8d9a1586ccdfeed9f274a26d6
ripemd-160 2e1e63f0389f861c448c435ff9e0f020fb9e81a4

30721891 as geometric shapes

Circle

Radius = n
Diameter 61443782
Circumference 193031334.13997
Area 2.9651438035164E+15

Sphere

Radius = n
Volume 1.2145976630794E+23
Surface area 1.1860575214066E+16
Circumference 193031334.13997

Square

Length = n
Perimeter 122887564
Area 943834586615881
Diagonal 43447314.913948

Cube

Length = n
Surface area 5663007519695286
Volume 2.8996383292043E+22
Space diagonal 53211876.116593

Equilateral Triangle

Length = n
Perimeter 92165673
Area 4.0869236448987E+14
Altitude 26605938.058297

Triangular Pyramid

Length = n
Surface area 4.0869236448987E+14
Volume 3.4172565426147E+21
Height 14482438.304649